Tubular propeller-pump.



A. ,T. AMES. TUBULAR PROPELLEB. PUMP.

APPLICATION FILED DBO. 16, 1913.

1,1 14,092. Patented Oct. 20, 1914.

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I INVENTOR Y Jz/m 761/44 14 TTOR/VE Y ALDEN 1*. AMES, or NILES, CALIFORNIA.

TUBULAR PROPELLER-PUMP.

Specification of Letters Patent.

Application filed December 16, .1913. Serial No. 806,976.

To all whom it may concern: Be it known that I, ALDEN T. AMns, a citizen of the United States, residing at Niles, in the countyof Alameda and State of California, have invented certain new and useful Improvements in Tubular Propeller-Pumps,

of which the following is a specification.

My invention relates to the class of tubular propeller-pumps. i

It has for its object the protection of the shaft-bearings from the wearing effect of the sand in the water, and to this end, my invention consists in the novel constructions which I shall hereinafter fully describeby reference to the accompanying drawings 1n. which- Figure 1 is a vertical section of my pump. Fig. 2 is a cross sectionon the line w-a: of Fig. 1.

In pumps of this class the plpe which forms the pump barrel is composed of a number of sections united by screwing the end of one into the flange or collar of another. In the axis of this pipe is a shaft to which a high rotary velocity is imparted, and upon this shaft, at intervals, are mounted the screw-propellers which successively engage and advance the water.

In my present application it will be suflicient to show but one pipe SBCtlOII and propeller, and my improvements as applied thereto, it being understood that the same improvements are to be placed at each propeller station. Accordingly, l is a pipe. section provided at its upper end with the usual internally threaded flange or collar 2, for the attachment of the next pipe section.

3 is the shaft in the axis of the pipe, and to this shaft rotation is imparted in any suitable manner.

Fitted within the pipe 1 is the shaft guide, which consists of a shaft bearing 4, radial deflector plates 5, and a ring 6, the ring be' ing screwed into the pipe flange .2 down to the shoulder thereof. In practice, the shaft bearing 4 is not integral with the rest of the guide, but is a separate piece of suitable metal for a bearing, and is screwed into the guide casting as shown. Fixed to the shaft above the gulde is the propeller 7, the mount-.

ing of said propeller being effected by suitable means, such, for example, as shown'by the set screws 8 in the propeller hub 9.

Heretofore, the propeller hub has simply abutted upon the shaft bearing 4. This left the top of said bearing exposed to the sand in the water, with the effect that the sand soon worked into said bearing and wore it out. To avoid this, I provide the propeller hub 9 with an extension. sleeve-guard 10,

which fits down over the shaft bearing 4, the I radial deflector-plates '5 beingcut out at 11 to receive it; and said sleeve passes down to an abutment shoulder l2,while the base of the propeller-hub 9 inclosed within and by the sleeve-guard abuts upon the top of the shaftbearing. The shaft hearing at its upper end is thus protected by the sleeve-guard 10 from the sand, which in the absence of the water-current will not work its way or rise between the guard'a-nd the bearing to the shaft. To protect the lower end of the shaft hearing from the sand, I provide said shaft bearing with a sleeve-guard 13 which extends downward freely about the shaft without touching it, to a suitable distance. This last named guard thus provides around the Patented Oct. 20, 1914.

shaft below the bearing a dead water space in which the sand, in the absence of current, will not rise to said bearing. Thus the shaft bearing is fully protected, both from above and below, from the sand, which'is the object sought.

I claim 1. In a pump of the described class, the

combination of a pipe; a rotatable shaft in the axis thereof; a shaft bearing fixed in the pipe; a propeller having a hub fixed to the shaft, above the shaft bearing; and a sleeveguard extending from the base of the proeller hub, said sleeve-guard inclosing the top of the shaft bearing and enveloping "said bearing below the top.

2. In a pump of the described class, the combination of a pipe; a rotatable shaft in the axis thereof; a shaft bearing fixed in the pipe; a propeller having a hub fixed to the shaft above said bearing; and a sleeveguard extending from the base of the shaft bearing and enveloping the shaft below said bearing. I

3'. "In a pump of the described class, the

combination of a pipe; a rotatable shaft in theaxis thereof; a shaft bearing fixed in the pipe; a propeller having a hub fixed to the shaft above said bearing; a sleeve-guard ex tending from the base of the propeller-hub,

said sleeve-guard inclosing the top of the shaft bearing and enveloping said bearing below the top; and a second sleeve-guard extending from the base of the shaft bearing and enveloping the shaft below said bearing.

l. In a pump of the described class, the

combination of a pipe; a rotatable shaft in the axis thereof; a shaft bearing fixed in the pipe and provided with radial deflector plates, cut out around the hub from their tops downwardly; a propeller having a hub fixed tothe shaft above the shaft bearing; and a sleeve-guard extending from the base of the pro eller hub into the cut out portions of the de ector plates said sleeve-guard inclosing the top of the shaft bearing and enveloping said bearing below the top.

5. In a pump of the described class, the

combination of a pipe; a rotatable shaft in v the axis thereof; a shaft bearing fixed in the Q pipe and provided with radial deflector 3 plates, cut out around the hub from their Copies of this patent may be obtained for ALDEN T. AMES. Witnesses WM. F. Boorrr, 1 D. B. RICHARDS.

five cents each, by addressing; the Commissioner of Patents,

Washington, D. 0. 

